Although I treat my lenses were well, the IS of my EF 35mm f/2 IS suddenly stopped working. That is very annoying, because it is the main feature of that lens. f/2 combined with IS made it a night vision lens. I wonder what is wrong with the IS. Might only the switch be broken? Without the IS I basically lose four stops now and need 16 times the ISO to compensate. That makes the lens pretty unusable for low light unless I use it on a camera with IBIS in future.

This problem damages my trust in Canon products further. Two years ago the main board of my camera broke and I had to replace it for more than 600 Euros. I found out that many people had the same problem with that camera and it might happen again with the new main board in a few years. If something like that happens, I wonder if I should invest a lot of money into an expensive Canon camera again.
I wonder how much it would cost to repair the IS. Probably more than half of the lens price and after some time it may break again, as I do not think that the replacement will have a higher quality than the original.
As cameras get more and more complex, Canon might earn a lot of money from repairs in future. We still do not know how long IBIS will last, as the first Canon cameras with IBIS came out two years ago. And what about the electronic viewfinders? How long until they break or at least have hot pixels? The camera of my grandpa still works. How long will our cameras work?

This problem damages my trust in Canon products further. Two years ago the main board of my camera broke and I had to replace it for more than 600 Euros. I found out that many people had the same problem with that camera and it might happen again with the new main board in a few years. If something like that happens, I wonder if I should invest a lot of money into an expensive Canon camera again.
I wonder how much it would cost to repair the IS. Probably more than half of the lens price and after some time it may break again, as I do not think that the replacement will have a higher quality than the original.
As cameras get more and more complex, Canon might earn a lot of money from repairs in future. We still do not know how long IBIS will last, as the first Canon cameras with IBIS came out two years ago. And what about the electronic viewfinders? How long until they break or at least have hot pixels? The camera of my grandpa still works. How long will our cameras work?